package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.minio.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.IOException;
import java.nio.file.FileSystems;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.SimpleTimeZone;
import java.util.UUID;

/**
 * @author Ruchan
 * @title FileServiceImpl
 * @date 2024/10/31 17:44
 * @description 
 */
@Service
public class FileServiceImpl implements FileService {
    @Autowired
    MinioClient minioClient;
    @Autowired
    MinioProperties minioProperties;

    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {
        String newFileName = null;
            boolean bucketExists = minioClient.bucketExists(BucketExistsArgs.builder().bucket(minioProperties.getBucketName()).build());
            if (!bucketExists) {
                minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());
                String policy = getPolicy(minioProperties.getBucketName());
                minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(minioProperties.getBucketName()).config(policy).build());
            }
            String formatDate = new SimpleDateFormat("yyy-MM-dd").format(new Date());
            String uuid = UUID.randomUUID().toString();
            newFileName = formatDate + File.separator + uuid + file.getOriginalFilename();
            minioClient.putObject(PutObjectArgs.builder()
                    .bucket(minioProperties.getBucketName())
                    .stream(file.getInputStream(), file.getSize(), -1)
                    .object(newFileName)
                    .contentType(file.getContentType()).build());

        return minioProperties.getEndpoint() + File.separator + minioProperties.getBucketName() + File.separator + newFileName;


    }

    public String getPolicy(String bucketName) {
        return """
                {
                  "Statement" : [ {
                    "Action" : "s3:GetObject",
                    "Effect" : "Allow",
                    "Principal" : "*",
                    "Resource" : "arn:aws:s3:::%s/*"
                  } ],
                  "Version" : "2012-10-17"
                }
                """.formatted(bucketName);
    }
}
